1. Full of or characterized by frenetic activity or wild excitement: a manic fiddler; the manic pace of modern life.
2. Psychiatry Relating to or affected by mania.
[Greek manikos, mad, from maniā, madness; see MANIA.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.